H
Hammy
Guest
This is from AN978 pg18 using IR's bootstrapped HS drivers.
http://i40.tinypic.com/1gljdv.png
You can see from the picture they have the timer tied to ground
through a 100k resistor why not just use the HS driver's 12Vdc return?
Is there any reason this wouldn't work with the 555 ground tied to the
same return as the IR2125.
I'm trying to do something similar keep a HS Fet on for extended
periods. I'm using a FAN7361 HS driver. I have a PIC operating off the
same 16VDc supply that the driver is operating off through a 5V shunt.
Could I use one of the PIC's outputs to recharge the boost cap in the
FAN7361 driver so it can keep the FET on until the PIC tells it to
shutdown?
FAN7361 data sheet
http://www.fairchildsemi.com/ds/FA%2FFAN7361.pdf
AN978 (pg18)
http://www.irf.com/technical-info/appnotes/an-978.pdf
http://i40.tinypic.com/1gljdv.png
You can see from the picture they have the timer tied to ground
through a 100k resistor why not just use the HS driver's 12Vdc return?
Is there any reason this wouldn't work with the 555 ground tied to the
same return as the IR2125.
I'm trying to do something similar keep a HS Fet on for extended
periods. I'm using a FAN7361 HS driver. I have a PIC operating off the
same 16VDc supply that the driver is operating off through a 5V shunt.
Could I use one of the PIC's outputs to recharge the boost cap in the
FAN7361 driver so it can keep the FET on until the PIC tells it to
shutdown?
FAN7361 data sheet
http://www.fairchildsemi.com/ds/FA%2FFAN7361.pdf
AN978 (pg18)
http://www.irf.com/technical-info/appnotes/an-978.pdf